 Data has shown that 91% of product managers today came from non-product management background. So, which means that the majority of you guys might come from the same background, you might be a data scientist, you might be an artist, you might be a marketer, you might be a software engineer, all of us transition from a different discipline into product management. Now, there's also a small percentage, which is 9% of them, they went to Harvard and Stanford. For undergrad, they first dropped out of college, they joined Google, so those group people, we don't compare us with those lucky people in this video. But, if you're those 91%, you should understand that the majority of things you've done in the past is very relevant product management. For example, ask you this type of question, did you interact with customers? Did you understand what the needs, desire and pain points? If so, you have done voice-to-customer interview. But if you even know, you have done that before and you didn't know the right methodology how to do it.